Construction of 1,2,5-Tricarbonyl Compounds using Methyl Cyanoacetate as a Glyoxylate Anion Synthon Combined with Copper(I) Iodide-Catalyzed Aerobic Oxidation
作者:Se Hee Kim、Ko Hoon Kim、Jae Nyoung Kim
DOI:10.1002/adsc.201100431
日期:2011.12
A practical and efficientsynthesis of various 1,2,5-tricarbonyl compounds is described. The synthesis has been carried out by a conjugate addition of methyl cyanoacetate to the β-position of α,β-unsaturated carbonyl compounds and a subsequent copper(I) iodide-catalyzed aerobicoxidation. In addition, various α-aryl- and α-alkyl-α-keto esters have been synthesized using a similar approach.
Synthesis of 2,2'-Dipyrryl Ketones from Pyrrole-2-carboxylic Acids with Trifluoroacetic Anhydride
作者:Se Hee Kim、Jin Woo Lim、Jin Yu、Jae Nyoung Kim
DOI:10.5012/bkcs.2013.34.9.2604
日期:2013.9.20
E-mail: kimjn@chonnam.ac.krReceived April 30, 2013, Accepted June 6, 2013An efficient synthesis of 2,2'-dipyrryl ketones has been carried out from pyrrole-2-carboxylic acids usingtrifluoroacetic anhydride (TFAA). Simultaneous generation of both mixed anhydride and 2-unsubstitutedpyrrole, via facile decarboxylation with in-situ generated TFA, made their cross reaction (intermolecularFriedel-Crafts acylation)